new extension: split satin (#315)

This branch adds a new command to split a satin column at a specified point.  The split happens at a stitch boundary to ensure that the two resulting satins sew just like the original.  All parameters set on the original satin remain set on the two new satins, and all rungs are retained.  If one of the satins would have no rungs left, a new rung is added.

How to use:

1. Select a satin column (simple satin doesn't work)
2. Attach the "Satin split point" command using the "Attach commands to selected objects" extension.
3. Move the symbol (or just the connector line's endpoint) to point to the exact spot you want the satin to be split at.
4. Select the satin column again.
5. Run "Split Satin Column".
6. The split point command and connector line disappear, and nothing else appears to have happened.  Select your satin and you'll see that it's been split.

This extension is a by-product of my initial work on #214.  Ink/Stitch will need the ability to split a satin at an arbitrary point, and I figured, why not go ahead and release that functionality as an extension while I'm at it? :)

1 files changed, 44 insertions, 37 deletions

diff --git a/translations/messages_ja_JP.po b/translations/messages_ja_JP.po
index 4cda09da..9a486654 100644
--- a/translations/messages_ja_JP.po
+++ b/translations/messages_ja_JP.po
@@ -248,115 +248,114 @@ msgstr ""
 msgid "shape is not valid.  This can happen if the border crosses over itself."
 msgstr ""
 
-#: lib/elements/satin_column.py:10
 msgid "Satin Column"
 msgstr ""
 
-#: lib/elements/satin_column.py:16
+#: lib/elements/satin_column.py:19
 msgid "Custom satin column"
 msgstr ""
 
-#: lib/elements/satin_column.py:22
+#: lib/elements/satin_column.py:25
 msgid "\"E\" stitch"
 msgstr ""
 
-#: lib/elements/satin_column.py:32 lib/elements/stroke.py:55
+#: lib/elements/satin_column.py:35 lib/elements/stroke.py:55
 msgid "Zig-zag spacing (peak-to-peak)"
 msgstr ""
 
-#: lib/elements/satin_column.py:33
+#: lib/elements/satin_column.py:36
 msgid "Peak-to-peak distance between zig-zags."
 msgstr ""
 
-#: lib/elements/satin_column.py:44
+#: lib/elements/satin_column.py:47
 msgid "Pull compensation"
 msgstr ""
 
-#: lib/elements/satin_column.py:45
+#: lib/elements/satin_column.py:48
 msgid "Satin stitches pull the fabric together, resulting in a column narrower than you draw in Inkscape.  This setting expands each pair of needle penetrations outward from the center of the satin column."
 msgstr ""
 
-#: lib/elements/satin_column.py:57
+#: lib/elements/satin_column.py:60
 msgid "Contour underlay"
 msgstr ""
 
-#: lib/elements/satin_column.py:57 lib/elements/satin_column.py:64
-#: lib/elements/satin_column.py:73
+#: lib/elements/satin_column.py:60 lib/elements/satin_column.py:67
+#: lib/elements/satin_column.py:76
 msgid "Contour Underlay"
 msgstr ""
 
-#: lib/elements/satin_column.py:64 lib/elements/satin_column.py:88
+#: lib/elements/satin_column.py:67 lib/elements/satin_column.py:91
 msgid "Stitch length"
 msgstr ""
 
-#: lib/elements/satin_column.py:70
+#: lib/elements/satin_column.py:73
 msgid "Contour underlay inset amount"
 msgstr ""
 
-#: lib/elements/satin_column.py:71
+#: lib/elements/satin_column.py:74
 msgid "Shrink the outline, to prevent the underlay from showing around the outside of the satin column."
 msgstr ""
 
-#: lib/elements/satin_column.py:81
+#: lib/elements/satin_column.py:84
 msgid "Center-walk underlay"
 msgstr ""
 
-#: lib/elements/satin_column.py:81 lib/elements/satin_column.py:88
+#: lib/elements/satin_column.py:84 lib/elements/satin_column.py:91
 msgid "Center-Walk Underlay"
 msgstr ""
 
-#: lib/elements/satin_column.py:93
+#: lib/elements/satin_column.py:96
 msgid "Zig-zag underlay"
 msgstr ""
 
-#: lib/elements/satin_column.py:93 lib/elements/satin_column.py:102
-#: lib/elements/satin_column.py:113
+#: lib/elements/satin_column.py:96 lib/elements/satin_column.py:105
+#: lib/elements/satin_column.py:116
 msgid "Zig-zag Underlay"
 msgstr ""
 
-#: lib/elements/satin_column.py:99
+#: lib/elements/satin_column.py:102
 msgid "Zig-Zag spacing (peak-to-peak)"
 msgstr ""
 
-#: lib/elements/satin_column.py:100
+#: lib/elements/satin_column.py:103
 msgid "Distance between peaks of the zig-zags."
 msgstr ""
 
-#: lib/elements/satin_column.py:110
+#: lib/elements/satin_column.py:113
 msgid "Inset amount"
 msgstr ""
 
-#: lib/elements/satin_column.py:111
+#: lib/elements/satin_column.py:114
 msgid "default: half of contour underlay inset"
 msgstr ""
 
-#: lib/elements/satin_column.py:148
+#: lib/elements/satin_column.py:249
 #, python-format
 msgid "satin column: %(id)s: at least two subpaths required (%(num)d found)"
 msgstr ""
 
-#: lib/elements/satin_column.py:173
+#: lib/elements/satin_column.py:257
 msgid "One or more rails crosses itself, and this is not allowed.  Please split into multiple satin columns."
 msgstr ""
 
-#: lib/elements/satin_column.py:180
+#: lib/elements/satin_column.py:264
 msgid "satin column: One or more of the rungs doesn't intersect both rails."
 msgstr ""
 
-#: lib/elements/satin_column.py:181 lib/elements/satin_column.py:184
+#: lib/elements/satin_column.py:265 lib/elements/satin_column.py:268
 msgid "Each rail should intersect both rungs once."
 msgstr ""
 
-#: lib/elements/satin_column.py:183
+#: lib/elements/satin_column.py:267
 msgid "satin column: One or more of the rungs intersects the rails more than once."
 msgstr ""
 
-#: lib/elements/satin_column.py:224
+#: lib/elements/satin_column.py:283
 #, python-format
 msgid "satin column: object %s has a fill (but should not)"
 msgstr ""
 
-#: lib/elements/satin_column.py:228
+#: lib/elements/satin_column.py:287
 #, python-format
 msgid "satin column: object %(id)s has two paths with an unequal number of points (%(length1)d and %(length2)d)"
 msgstr ""
@@ -406,6 +405,10 @@ msgid "Legacy running stitch setting detected!\n\n"
 "It looks like you're using a stroke smaller than 0.5 units to indicate a running stitch, which is deprecated.  Instead, please set your stroke to be dashed to indicate running stitch.  Any kind of dash will work."
 msgstr ""
 
+#: lib/extensions/auto_satin.py:14
+msgid "Please select one or more satin columns to operate on."
+msgstr ""
+
 #: lib/extensions/base.py:113
 msgid "No embroiderable paths selected."
 msgstr ""
@@ -438,7 +441,7 @@ msgid "\n\n"
 "Seeing a 'no such option' message?  Please restart Inkscape to fix."
 msgstr ""
 
-#: lib/extensions/flip.py:35
+#: lib/extensions/flip.py:25
 msgid "Please select one or more satin columns to flip."
 msgstr ""
 
@@ -1162,21 +1165,25 @@ msgstr ""
 msgid "Brother Stitch Format"
 msgstr ""
 
-#: templates/convert_to_satin.inx:3
-msgid "Convert Line to Satin"
+#: templates/auto_satin.inx:3
+msgid "Auto Satin"
 msgstr ""
 
 #. This is used for the submenu under Extensions -> Ink/Stitch.  Translate this
 #. to your language's word for its language, e.g. "Español" for the spanish
 #. translation.
-#: templates/convert_to_satin.inx:12 templates/embroider.inx:24
-#: templates/flip.inx:12 templates/global_commands.inx:16
-#: templates/install.inx:12 templates/layer_commands.inx:16
-#: templates/object_commands.inx:15 templates/params.inx:12
-#: templates/print.inx:12 templates/simulate.inx:12
+#: templates/auto_satin.inx:12 templates/convert_to_satin.inx:12
+#: templates/embroider.inx:24 templates/flip.inx:12
+#: templates/global_commands.inx:16 templates/install.inx:12
+#: templates/layer_commands.inx:16 templates/object_commands.inx:15
+#: templates/params.inx:12 templates/print.inx:12 templates/simulate.inx:12
 msgid "English"
 msgstr ""
 
+#: templates/convert_to_satin.inx:3
+msgid "Convert Line to Satin"
+msgstr ""
+
 #: templates/embroider.inx:3
 msgid "Embroider"
 msgstr ""